There is such a thing as a stupid question:

Saying that there are no stupid questions devalues the process of inquiry. Questions are the engines that power the growth of knowledge, and we cannot rely solely on a random interrogatory process. Although unstructured strategies such as brainstorming and free association have their uses, we need to balance them with a disciplined approach to questioning. Students must learn to expand on initial answers as they ask new questions.

I think that this subject relates to this one, at least remotely.

[Via Geek Press]